<template>
    <div class="count">
        <h2>当前求和为：{{countStore.sum}}</h2>
        <select v-model="n">
            <option :value="1">1</option>
            <option :value="2">2</option>
            <option :value="3">3</option>
        </select>
        <button @click="add">+</button>
        <button @click="minus">-</button>
    </div>
</template>

<script setup lang="ts" name="Count">
    import { ref } from 'vue'
    import {useCountStore} from '@/store/count'
    const countStore = useCountStore()

    let sum = ref(0)
    let n = ref(1)
    function add(){
        sum.value += n.value
    }
    function minus(){
        sum.value -= n.value
    }

</script>

<style scoped>
.count{
    background-color: skyblue;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 0 10px;
}
select,button{
    margin: 0 5px;
    height: 25px;
}
</style>